It mostly depends on the state. The fundamental problem there is that plenty of people have won lawsuits against hospitals/doctors when their loved one mention

It mostly depends on the state. The fundamental problem there is that plenty of people have won lawsuits against hospitals/doctors when their loved one mentioned suicide in some way, was not involuntarily committed and then proceeded to kill themself. The amounts involved in those lawsuits tend to be high. In contrast, very few people have won lawsuits against hospitals/doctors who involuntarily committed them when they probably shouldn't have been, and even if they do, the monetary harm that they can recoup is probably pretty small. This results in very perverse incentives for the institution. In your case either the people involved in your care had a very high personal risk tolerance, or it happened in a state where there is less precedent on handing over megabucks to the families of people who commit suicide.